add mpich3 topo tests

[simgrid.git] / teshsuite / smpi / mpich3-test / topo / cartzero.c

diff --git a/teshsuite/smpi/mpich3-test/topo/cartzero.c b/teshsuite/smpi/mpich3-test/topo/cartzero.c
new file mode 100644 (file)
index 0000000..c8e601e
--- /dev/null
+++ b/teshsuite/smpi/mpich3-test/topo/cartzero.c
@@ -0,0 +1,92 @@
+/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
+/*
+ *
+ *  (C) 2008 by Argonne National Laboratory.
+ *      See COPYRIGHT in top-level directory.
+ */
+#include "mpi.h"
+#include <stdio.h>
+#include "mpitest.h"
+
+/*  
+    Check that the MPI implementation properly handles zero-dimensional
+    Cartesian communicators - the original standard implies that these
+    should be consistent with higher dimensional topologies and thus 
+    these should work with any MPI implementation.  MPI 2.1 made this
+    requirement explicit.
+*/
+int main( int argc, char *argv[] )
+{
+    int errs = 0;
+    int size, rank, ndims;
+    MPI_Comm comm, newcomm;
+
+    MTest_Init( &argc, &argv );
+
+    /* Create a new cartesian communicator in a subset of the processes */
+    MPI_Comm_size( MPI_COMM_WORLD, &size );
+    MPI_Comm_rank( MPI_COMM_WORLD, &rank );
+    if (size < 2) {
+       fprintf( stderr, "This test needs at least 2 processes\n" );
+       MPI_Abort( MPI_COMM_WORLD, 1 );
+    }
+
+    MPI_Cart_create( MPI_COMM_WORLD, 0, NULL, NULL, 0, &comm );
+
+    if (comm != MPI_COMM_NULL) {
+       int csize;
+       MPI_Comm_size( comm, &csize );
+       if (csize != 1) {
+           errs++;
+           fprintf( stderr, 
+            "Sizes is wrong in cart communicator.  Is %d, should be 1\n", 
+            csize ); 
+       }
+
+       /* This function is not meaningful, but should not fail */
+       MPI_Dims_create(1, 0, NULL);
+
+       ndims = -1;
+       MPI_Cartdim_get(comm, &ndims);
+       if (ndims != 0) {
+           errs++;
+           fprintf(stderr, "MPI_Cartdim_get: ndims is %d, should be 0\n", ndims);
+       }
+
+       /* this function should not fail */
+       MPI_Cart_get(comm, 0, NULL, NULL, NULL);
+
+       MPI_Cart_rank(comm, NULL, &rank);
+       if (rank != 0) {
+           errs++;
+           fprintf(stderr, "MPI_Cart_rank: rank is %d, should be 0\n", rank);
+       }
+
+       /* this function should not fail */
+       MPI_Cart_coords(comm, 0, 0, NULL);
+
+       MPI_Cart_sub(comm, NULL, &newcomm);
+       ndims = -1;
+       MPI_Cartdim_get(newcomm, &ndims);
+       if (ndims != 0) {
+           errs++;
+           fprintf(stderr, 
+              "MPI_Cart_sub did not return zero-dimensional communicator\n");
+       }
+
+       MPI_Barrier( comm );
+
+       MPI_Comm_free( &comm );
+       MPI_Comm_free( &newcomm );
+    } 
+    else if (rank == 0) {
+       errs++;
+       fprintf( stderr, "Communicator returned is null!" );
+    }
+
+    MTest_Finalize( errs );
+
+    MPI_Finalize();
+
+    return 0;
+}